Cap device for mixing different kinds of materials separately contained therein and in bottle

ABSTRACT

A cap device for bottles, which is capable of mixing an additive contained therein with a material contained in a bottle to prepare a mixture in accordance with a simple rotating action of the cap device relative to the bottle, and which allows the mixture to be quickly discharged from the container. In the cap device of the invention, having a valve member seated in a neck of a bottle; a cap body tightened to an externally threaded mouth of a bottle and opened or closed at a lower end of a funnel part thereof by the valve member; and a cap cover acting as an additive containing part and assembled with the cap body to define a cavity therein to contain an additive in the cavity, the neck of the bottle is tapered downward on an inner surface thereof; the valve member is provided with a valve part at a center thereof to open or close the lower end of the funnel part of the cap body, with a plurality of radial ribs extending outward from an external surface of the valve part while defining a plurality of additive discharging holes between the radial ribs, the valve member also having a ring to surround outside ends of the radial rings, and a wedge-tipped shank vertically extending upward from a center of the valve part; a tapered surface is formed along an outer surface of the ring to correspond to the tapered inner surface of the neck of the bottle; and a vent hole is formed at a predetermined position of an upper end of the funnel part of the cap body.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates, in general, to a cap for bottles which is capable of quickly mixing different kinds of materials to prepare a mixture and, more particularly, to a cap device for bottles, which allows a user to mix an additive contained in the cap device with a material contained in a bottle to prepare a mixture by simply rotating the cap device relative to the bottle, thus easily preparing the mixture just before drinking or using the mixture.

[0003] 2. Description of the Related Art

[0004] In the prior art, most conventional disposable bottles circulated and sold in markets each contain therein only a single kind of material, such as a drink, a liquid medicine or a liquid chemical, and are closed by caps at the mouths thereof.

[0005] When a user wants to add an additive to the material contained in such a capped bottle so as to prepare a mixture prior to drinking or using the mixture, the user must add the additive from a separate container to the bottled material after removing a cap from the bottle. Therefore, it is necessary for manufacturers of the additives and the bottled materials to separately contain such additives and materials in separate containers and bottles prior to marketing them, thus undesirably wasting natural resources due to the production of the separate containers and capped bottles. In addition, the adding of the additive from the separate container to the bottled material to mix them after removing the cap from the bottle is inconvenient to the user in that the user is forced to separately purchase and handle the additive container and the bottle. Furthermore, it is extremely difficult for the user to add a precise amount of the additive from the separate container to the material contained in the bottle, and so, typically the user roughly measures the amount of the additive to be added to the bottled material. Therefore, in the case of mixing an additive with a bottled drink to produce a mixed beverage, the rough measurement of the amount of the additive may result in a change in the taste and quality of the mixed beverage. In the case of mixing an additive with a bottled liquid medicine or a bottled liquid chemical to produce a mixed medicine or a mixed chemical, the rough measurement of the amount of the additive may result in incomplete dissolution of effective ingredients of the additive in the medicine or the chemical and a failure of accomplishment of desired medical or chemical effects of the mixed medicine or the mixed chemical.

[0006] In an effort to overcome the above-described problems, the inventor of the present invention proposed a cap device for bottles, which is capable of quickly mixing different kinds of materials to prepare a mixture. The construction of the cap device is shown in FIG. 1. As shown in the drawing, the cap device comprises a cap body 50, and a cap cover 100 assembled with the cap body 50 to define a cavity therein to contain an additive in the cavity. The cap cover 100 thus acts as a containing unit for an additive. The cap device also has a valve member 120K which is seated in the neck of a bottle 13 to allow the cavity defined by the cap body 50 and the cap cover 100 to selectively communicate with the interior of the bottle 13.

[0007] The valve member 120K is provided at the center thereof with a valve part 122. A plurality of radial ribs 124 extend outward from an external surface of the valve part 122 in radial directions, and the outside ends of the radial ribs 124 are integrated with a circular ring so that a plurality of additive discharging holes are formed at the valve member 120K.

[0008] The cap body 50 has internal threads to engage with the externally threaded mouth of the bottle 13. A funnel part 54 is integrally formed in the cap body 50 to discharge the additive into the bottle 13 through a lower end 52 thereof.

[0009] The cap cover 100 is assembled at the lower end thereof with the upper end of the cap body 50 to cover the open upper end of the cap body 50 while defining the cavity inside both the cap body 50 and the cap cover 100 to contain the additive in the cavity. A vent hole 102 is formed at a predetermined position of the top wall of the cap cover 100.

[0010] A step 120S is formed around the inner surface of the neck of the bottle 13 to seat the valve member 120K in the neck of the bottle 13.

[0011] When the cap body 50 is rotated to move upward relative to the externally threaded mouth of the bottle 13, the lower end 52 of the funnel part 54 is separated from the valve part 122 of the valve member 120K which is seated on the step 120S of the bottle 12, thus causing the cavity of the cap device containing the additive to communicate with the interior of the bottle 13 containing the material.

[0012] In such a case, the vacuum pressure acting on the surface of the additive contained in the cavity of the cap device is released because atmospheric air is introduced into the cavity through the vent hole 102 of the cap cover 100. The additive thus smoothly flows from the cavity of the cap device into the bottle 13.

[0013] Therefore, the additive flows from the cavity of the cap device into the interior of the bottle 13 through the open lower end 52 of the funnel part 52 and the additive discharging holes of the valve member 120K.

[0014] After the additive is mixed with the bottled material to produce a desired mixture in the bottle 13, the user completely removes the cap device having the cap body 50 and the cap cover 100 from the mouth of the bottle 13 to drink or use the mixture.

[0015] However, this proposed cap device as described is problematic as follows. First, even when the cap device having the cap body 50 and the cap cover 100 is completely removed from the mouth of the bottle 13 as described above, the valve member 120K remains in the neck of the bottle 13, thus undesirably reducing the flow rate of the mixture which is discharged from the bottle 13. Therefore, it is impossible to quickly discharge the mixture from the bottle 13.

[0016] Second, the vent hole 102, which introduces the atmospheric air into the cavity of the cap device to release the vacuum pressure acting on the surface of the additive contained in the cavity of the cap device, is formed on the top wall of the cap cover 100 so as to be exposed to the atmosphere. Therefore, harmful substances, such as poisonous substances, may be maliciously injected into the cap device through the exposed vent hole 102. The pure state of the additive may be thus lost, and, furthermore, the user may be fatally poisoned when a poisonous substance is maliciously injected into the cap device.

[0017] Third, the step 120S must be formed around the inner surface of the neck of the bottle 13 to seat the valve member 120K thereon, and it is difficult and most costly to produce the bottle having the step through an injection molding process. Furthermore, the production time of the bottle is excessively increased, resulting in a reduction in workability and productivity while producing such bottles.

SUMMARY OF THE INVENTION

[0018] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a cap device for bottles, which allows the additive and the bottled material to be safely maintained in their respective pure states without being mixed together before a user adds the additive to the bottled material, thus being flee from physical or chemical problems of degradation in the properties of ingredients, change in colors, and a generation of floating matters and deposits experienced in conventional bottled mixtures marketed in a bottled state.

[0019] Another object of the present invention is to provide a cap device for bottles, which does not force the user to separately purchase, store, carry and handle an additive container and a bottle containing the material, thus being convenient to the user, and which is flee from excessive consumption of labor, time and natural resources due to the separate production of the containers for additives and capped bottles.

[0020] A further object of the present invention is to provide a cap device for bottles, which allows the user to mix the precise amount of the additive with the bottled material to prepare the mixture, so that it is possible to prevent variations in the taste and quality of the mixture in the case of preparing a mixed beverage through the mixing, and to prevent incomplete dissolution of effective ingredients of the additive in the bottled material or a failure of accomplishment of desired medical or chemical effects of the mixture in the case of preparing a mixed medicine or a mixed chemical through the mixing.

[0021] Yet another object of the present invention is to provide a cap device for bottles, which quickly discharges a mixture from a bottle as desired, and almost completely empties the bottle, and which prevents a malicious injection of harmful substances, such as poisonous substances, into the cap device, thus allowing the user to safely drink or use the liquid, and in which a step is easily and simply formed on an inner surface of a neck of the bottle through an injection molding process, so that the bottle is produced without consumption of excessive time, thus improving workability and productivity while producing the bottles.

[0022] In order to accomplish the above objects, the present invention provides a cap device for bottles, having a valve member placed in a neck of a bottle; a cap body tightened to an externally threaded mouth of a bottle and opened or closed at a lower end of a funnel part thereof by the valve member, and a cap cover assembled with the cap body to define a cavity therein to contain an additive in the cavity, wherein the neck of the bottle is tapered downward on an inner surface thereof. The valve member is provided with a valve part at a center thereof to open or close the lower end of the funnel part of the cap body, with a plurality of radial ribs extending outward from an external surface of the valve part while defining a plurality of additive discharging holes between the radial ribs. The valve member also has a ring to surround outside ends of the radial rings and a wedge-tipped shank vertically extending upward from a center of the valve part A tapered surface is formed along an outer surface of the ring to correspond to the tapered inner surface of the neck of the bottle; and a vent hole is formed at a predetermined position of an upper end of the funnel part of the cap body.

BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0024]FIG. 1 is a sectional view showing the construction of a conventional cap device for bottles, which is designed to mix an additive contained therein with a material contained in a bottle to prepare a mixture;

[0025]FIG. 2 is an exploded perspective view to show the construction of a cap device for bottles, according to a first embodiment of the present invention;

[0026]FIG. 3 is an exploded sectional view to show the construction of the cap device of FIG. 2;

[0027]FIG. 4 is a sectional view to show the cap device of FIG. 2, when the cap device is fully tightened to the mouth of a bottle after the parts of the cap device are assembled into a single body;

[0028]FIG. 5 is a sectional view to show the cap device of FIG. 2, when the cap device is loosened from the mouth of the bottle;

[0029]FIG. 6 is a sectional view to show the cap device of FIG. 2, when the cap device is completely removed from the mouth of the bottle along with a valve member;

[0030]FIGS. 7 and 8 are sectional views to show the construction of a cap device for bottles, according to a second embodiment of the present invention, in which: FIG. 7 is an exploded sectional view of the cap device, and FIG. 8 is a sectional view of the cap device with the parts assembled into a single structure;

[0031]FIG. 9 is a sectional view showing the construction of a cap device for bottles, according to a third embodiment of the present invention; and

[0032]FIG. 10 is a sectional view showing the construction of a cap device for bottles according to a further embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0033] Reference should now be made to the drawings, in which the same reference numerals are used throughout the different drawings to designate the same or similar components.

FIRST EMBODIMENT

[0034]FIGS. 2 and 3 are views showing the construction of a cap device for bottles, according to the first embodiment of the present invention. As shown in the drawings, the cap device according to the first embodiment of the present invention comprises a cap body 50, and a cap cover 100 assembled with the cap body 50 to define a cavity therein to contain an additive within the cavity. The cap cover 100 thus functions as a container for an additive in this first embodiment. The cap device also has a valve means to allow the cavity defined by the cap body 50 and the cap cover 100 to selectively communicate with the interior of a bottle 13. In the first embodiment, the valve means comprises a valve member 120K seated in the neck of the bottle 13.

[0035] In the first embodiment as shown in FIGS. 3 to 6, the neck of the bottle 13 is formed to be tapered downward on its inner surface 16 a.

[0036] The valve member 120K is provided in the neck with a valve part 122 which acts as a valve seat The valve part 122 of the valve member 120K closes or opens the lower end of a funnel part 54 of the cap body 50 in accordance with a rotating action of the cap body 50 relative to the mouth of the bottle 13. A plurality of radial ribs 124 extend outward from an external surface of the valve part 122 in radial directions, and the outside ends of the radial ribs 124 are integrated with a circular ring, so that a plurality of additive discharging holes are formed at the valve member 120K.

[0037] The valve member 120K also has a wedge-tipped shank 126 which vertically extends upward from the center of the valve part 122, with a wedge-shaped tip provided at the top end of the shank 126. The circular ring of the valve part 120K is tapered at the outer surface thereof to form a tapered surface 16 b which corresponds to the tapered inner surface 16 a of the neck of the bottle 13.

[0038] The cap body 50 has internal threads to engage with the externally threaded mouth of the bottle 13. The funnel part 54 is integrally formed in the cap body 50 to discharge the additive into the bottle 13 through a lower end 52 thereof A vent hole 18 is formed at a predetermined position of the upper end of the funnel part 54.

[0039] The cap cover 100 is assembled at the lower end thereof with the upper end of the cap body 50 to cover the open upper end of the cap body 50 while defining the cavity inside both the cap body 50 and the cap cover 100 to contain the additive in the cavity.

[0040] When the internally threaded cap body 50 assembled with the cap cover 100 of the cap device is tightened to the externally threaded mouth of the bottle 13, the wedge-tipped shank 126 of the valve member 120K previously set in the neck of the bottle 13 is inserted into the lower end 52 of the funnel part 50, thus being positioned in the funnel part 54. Therefore, the valve member 120K is assembled with the cap device, as shown in FIG. 4. When the cap body 50 is fully tightened to the mouth of the bottle 13, the lower end 52 of the funnel part 54 comes into close contact with the valve part 122 of the valve member 120K. The lower end 52 of the funnel part 54 is thus completely closed. In such a case, the vent hole 18 of the cap device is also closed by the top edge of the mouth of the bottle 13.

[0041] When the cap body 50 is rotated to move upward relative to the mouth of the bottle 13, as shown in FIG. 5, the lower end 52 of the funnel part 54 is separated from the valve part 122 of the valve member 120K, thus causing the cavity of the cap device containing the additive to communicate with the interior of the bottle 13 containing the material.

[0042] Therefore, the additive flows from the cavity of the cap device into the interior of the bottle 13 through the open lower end 52 of the funnel part 52 and the additive discharging holes formed between the radial ribs 124 of the valve member 120K. In such a case, the vent hole 18 of the cap device is opened, so that the vacuum pressure acting on the surface of the additive contained in the cavity of the cap device is released because air is introduced into the cavity through the open vent hole 18. The additive thus smoothly flows from the cavity of the cap device into the bottle 13, so that the additive is easily added to the material in the bottle 13 to produce a desired mixture.

[0043] After the additive is mixed with the bottled material to produce the desired mixture in the bottle 13, the user completely removes the cap device having the cap body 50 and the cap cover 100 from the mouth of the bottle 13, as shown in FIG. 6, to drink or use the mixture. When the cap device is removed from the mouth of the bottle 13 as described above, the valve member 120K is removed from the bottle 13 along with the cap device because the valve member 120K is assembled with the cap device through the wedge-tipped shank 126.

[0044] When the valve member 120K is seated in or removed from the neck of the bottle 13, it is easy to seat or remove the valve member 120K relative to the neck of the bottle 13 because the circular ring of the valve part 120K has the tapered outer surface 16 b which corresponds to the tapered inner surface 16 a of the neck of the bottle 13.

SECOND EMBODIMENT

[0045]FIGS. 7 and 8 are sectional views showing the construction of a cap device for bottles, according to the second embodiment of the present invention. As shown in the drawings, the general shape of the cap device according to the second embodiment of the present invention remains the same as that described for the first embodiment, but a protective cover “C” is added to the cap device of the second embodiment. In the second embodiment, the protective cover “C” is preferably colored as, for example, translucent brown, such that the protective cover “C” partially intercepts light, such as sunlight, transmitted into the cavity of the cap device.

[0046] That is, the cap device according to the second embodiment of the present invention has the protective cover “C”, which holds the cap cover 100 by means of an upper locking means and is removably fitted over the upper part of the bottle 13 by means of a lower locking means.

[0047] The upper locking means comprises a first locking flange 100a formed along the outer edge of the top wall of the cap cover 100 acting as an additive containing part, and a first locking groove “CH” formed around the comer of a depression provided at a lower surface of a top wall of the protective cover “C”. The first locking flange 100 a of the cap cover 100 removably engages with the first locking groove “CH” of the protective cover “C”, so that the protective cover “C” holds the cap cover 100.

[0048] The lower locking means comprises a second locking flange “T” formed around an inner surface of the lower edge of the protective cover “C”, and a second locking groove “H” formed around the upper part of the bottle 13. The second locking flange “T” of the protective cover “C” is removably fitted over the second locking groove “H” of the bottle 13.

[0049] Since the cap device according to the second embodiment of the present invention has the translucent blow protective cover “C” which partially intercepts light, such as sunlight, transmitted into the cavity of the cap device, it is possible to preserve the additive in the cavity of the cap device for a lengthy period of time, without allowing a chemical or physical change in the additive.

[0050] When the cap device has the translucent brown protective cover with the above-described light intercepting effects, it is possible to produce the cap cover 100 of the cap device by use of transparent materials. The protective cover also protects the cap cover 100 from external impact, thus preventing unexpected loss of the additive.

[0051] In addition, since the protective cover “C” has a large diameter, the user can easily rotate the cap device with small force, relative to the mouth of the bottle 13.

THIRD EMBODIMENT

[0052]FIG. 9 is a sectional view showing the construction of a cap device for bottles, according to the third embodiment of the present invention. As shown in the drawing, the general shape of the cap device according to the third embodiment remains the same as that described for the second embodiment, but the cap device of the third embodiment has a step 14, in place of the tapered inner surface 16 a. The step 14 is formed around the inner surface of the neck of a bottle 13 to stably and removably seat a valve member 120K in the neck of the bottle 13. That is, the cap device of the third embodiment has the valve member 120K seated in the neck of the bottle 13, and a cap body 50 assembled with a cap cover 100 to define a cavity to contain an additive therein. The cap cover 100 thus acts as an additive containing part in this third embodiment. The cavity is selectively opened or closed by the valve member 120K. The cap device also has a protective cover “C” to protect the cap device.

[0053] Due to the step 14 of the bottle 13, it is easy to seat and remove the valve member 120K relative to the neck of the bottle 13, in a similar manner to that described for the first and second embodiments. The detailed description of the operational effect of the cap device according to the third embodiment is thus not deemed necessary.

[0054] In accordance with the first second, and third embodiments of the present invention, a vent tube 18 a can connected to the vent hole 18 of the cap body 50. That is, the cap device according to the first, second, and third embodiments can further comprise the vent tube 18 a, which has a predetermined length and is installed in the vent hole 18 of the cap body 50, as shown in FIGS. 2 through 9.

[0055] Due to the vent tube 18 a, it is possible to prevent a leakage of the additive from the cavity of the cap device through the vent hole 18, while allowing an introduction of air into the cavity through the vent hole 18. Therefore, the additive smoothly flows from the cavity of the cap device into the bottle 13, in response to a rotating action of the cap body 50 relative to the mouth of the bottle 13.

FOURTH EMBODIMENT

[0056]FIG. 10 is a sectional view showing the construction of a cap device for bottles, according to the fourth embodiment of the present invention. In the fourth embodiment, the bottle 13 has first and second container parts 60 and 68 at the bottom thereof to respectively contain first and second chemicals 62 and 66 in the two container parts 60 and 68. A breakable sheet 64 is provided at the open lower end of the first container part 60 to close the lower end of the container part 60. In order to break the breakable sheet 64 to open the lower end of the first container part 60 when necessary, a breaking edge 70 is provided at the inner surface of the second container part 68. A cylindrical skirt 72 integrally extends downward from the sidewall of the first container part 60 so as to surround and protect the first and second container parts 60 and 68, and allows the bottle 13 to stably stand upright on a support surface when the bottle 13 is stored on the support surface.

[0057] That is, the first container part 60 having a funnel shape is integrally provided at the bottom of the bottle 13. The first container part 60 is open at the lower end thereof to form an opening covered with the breakable sheet 64, and is externally threaded at its lower end. The first chemical 62, which absorbs heat from the surroundings to cool the surroundings when it is mixed with the second chemical 66 to produce a cooling mixture, is contained in the first container part 60.

[0058] The second container part 68 is a cup-shaped body having internal threads, and externally engages with the externally threaded lower end of the first container part 60. The second chemical 66, which absorbs heat from the surroundings to cool the surroundings when it is mixed with the first chemical 62 to produce the cooling mixture, is contained in the second container part 68.

[0059] In order to break the breakable sheet 64 to open the lower end of the first container part 60 when the second container part 68 is rotated to move upward along the externally threaded lower end of the first container part 60, the breaking edge 70 is provided on the inner surface of the second container part 68. The cylindrical skirt 72, which integrally extends downward from the sidewall of the first container part 60, surrounds and protects the first and second container parts 60 and 68, and allows the bottle 13 to stably stand upright on the support surface.

[0060] In the fourth embodiment, a part of the bottom of the bottle 13 is protruded downward into the first container part 60, thus enlarging the heat exchanging surface area at which heat transfers between a bottled material and the cooling mixture produced by the mixing of the first and second chemicals. In the present invention, the first chemical 62 is preferably contained in the first container part 60 at a vacuum pressure, so that the second chemical 66 more effectively and quickly flows into the first chemical 62 when the lower end of the first container part 60 is opened.

[0061] As described above, the present invention provides a cap device for bottles, which overcomes the problems experienced in mixing two different kinds of materials to prepare a mixture by the use of a conventional cap device for bottles, and which allows the additive contained therein and a bottled material to be maintained in their respective pure states without being mixed together before a user adds the additive to the bottled material, thus being flee from physical or chemical problems of degradation in the properties of ingredients, change in colors, and a generation of floating matters and deposits. The cap device for bottles of this invention also contains the additive separate from the bottled material. Therefore, the cap device does not force the user to separately purchase and handle an additive container and a bottle containing a bottled material, thus being convenient to the user, and which is free from excessive consumption of labor, time and natural resources due to the separate production of the containers for additives and capped bottles. The cap device for bottles of the present invention also allows the user to mix the precise amount of the additive with the bottled material to prepare the mixture, so that it is possible to prevent variations in the taste and quality of the mixture in the case of preparing a mixed beverage through the mixing, and to prevent incomplete dissolution of effective ingredients of the additive in the bottled material or a failure of accomplishment of desired medical or chemical effects of the mixture in the case of preparing a mixed medicine or a mixed chemical through the mixing.

[0062] In the cap device of the present invention, a cap body, an additive containing part, and a valve means are completely removed from a bottle at the same time after the additive is mixed with the bottled material, so that it is possible to quickly discharge the mixture from the bottle.

[0063] In addition, a vent hole which introduces air into the cavity of the additive contain part to remove a vacuum pressure from the cavity, is formed in the cap body such that the vent hole is not exposed to the outside of the cap device. It is thus possible to prevent a malicious injection of harmful substances, such as poisonous substances, into the cap device through the vent hole, thus allowing the user to safely drink or use the mixture.

[0064] In the cap device of the present invention, a step for seating the valve member thereon is easily and simply formed on the inner surface of the neck of the bottle through an injection molding process, so that the bottle is produced without consumption of excessive time, thus improving workability and productivity while producing the bottles.

[0065] Although preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. 

What is claimed is:
 1. A cap device for a bottle having an externally threaded mouth and a neck with a tapered inner surface, said cap device comprising: a cap body twistably attaching to said externally threaded mouth of said bottle; a funnel part integrated with said cap body, said funnel part having an opening at a lower end thereof; a cap cover assembled with the cap body to define a cavity for containing an additive in said cavity; a valve member for closing and opening said opening at said lower end of said funnel part said valve member having a valve part at a center thereof and a shank extending upward from said valve par, said shank extending into said cap body through said opening at said lower end of said funnel part; wherein said valve member is removeably seated within said neck of said bottle and sealing said opening of said lower end of said funnel part when said cap body is completely twisted onto said bottle; and, wherein said valve member is disengaged from within said neck of said bottle and not sealing said opening of said lower end of said funnel part when said cap body is twisted off said bottle.
 2. The cap device as described in claim 1 wherein said shank extending from said valve part has a wedge-shaped tip.
 3. The cap device as described in claim 2 wherein said valve member has a plurality of radial ribs extending outward from an external surface of the valve part while defining a plurality of additive discharging holes between the radial ribs; said valve member also having a ring to surround outside ends of the radial ribs; and, said ring having an outer surface which is tapered to correspond to the tapered inner surface of the neck of the bottle.
 4. The cap device as described in claim 1 further comprising a vent hole formed at a predetermined position of an upper end of the funnel part of the cap body.
 5. The cap device as described in claim 4 further comprising a vent tube extending from said cavity and into said vent hole.
 6. The cap device for bottles according to claim 1, further comprising: a protective cover to receive the cap cover therein while holding the cap cover by means of upper locking means, and removably fitted over an upper part of the bottle by means of lower locking means.
 7. The cap device for bottles according to claim 6, wherein the upper locking means comprises a locking flange formed along an outer edge of a top wall of the cap cover and a locking groove formed around a comer of a depression provided at a lower surface of a top wall of the protective cover, such that the locking flange of the cap cover removably engages with the locking groove of the protective cover; and, wherein the lower locking means comprises a locking flange formed around an inner surface of a lower edge of the protective cover and a locking groove formed around the upper part of the bottle, such that the locking flange of the protective cover is removably fitted over the locking groove of the bottle.
 8. The cap device for bottles according to claim 1, wherein the bottle comprises: a first container part externally formed at a bottom of the bottle, and having an open lower end, with external threads formed at the lower end of the first container part; a first chemical contained in the first container part; a breakable sheet provided at the open lower end of the first container pail to close the lower end of the container part; a second container part having an open upper end, and externally engaging with the external threads of the first container part, the second container part containing therein a second chemical which produces a cooling mixture to absorb heat from surroundings to cool the surroundings when the second chemical is mixed with the first chemical; a breaking edge provided at an inner surface of the second container part so as to break the breakable sheet and to open the lower end of the first container part, when the second container part is rotated to move upward relative to the first container part; and a skirt extending downward from a sidewall of a lower portion of the bottle so as surround the first and second container parts.
 9. A bottle having a cap device for separate storage of an additive therein and for release of said additive into said bottle as said cap device is being removed from said bottle, said bottle having a neck and an externally threaded mouth; said cap device comprising: a cap body twistably attaching to said externally threaded mouth of said bottle; a funnel part integrated with said cap body, said funnel part having an opening at a lower end thereof; a cap cover assembled with the cap body to define a cavity for containing an additive in said cavity; a valve member for closing and opening said opening at said lower end of said funnel part, said valve member having a valve part at a center thereof and a shank extending upward from said valve part, said shank extending into said cap body through said opening at said lower end of said funnel part; wherein said valve member is removeably seated within said neck of said bottle and sealing said opening of said lower end of said funnel part when said cap body is completely twisted onto said bottle; and, wherein said valve member is disengaged from within said neck of said bottle and not sealing said opening of said lower end of said funnel part when said cap body is twisted off said bottle.
 10. The bottle as described in claim 9 wherein said inner surface of said neck is tapered.
 11. The bottle as described in claim 10 wherein said shank extending from said valve part has a wedge-shaped tip.
 12. The bottle as described in claim 11 wherein said valve member has a plurality of radial ribs extending outward from an external surface of the valve part while defining a plurality of additive discharging holes between the radial ribs; said valve member also having a ring to surround outside ends of the radial ribs; and, said ring having an outer surface which is tapered to correspond to the tapered inner surface of the neck of the bottle.
 13. The bottle as described in claim 10 further comprising a vent hole formed at a predetermined position of an upper end of the funnel part of the cap body.
 14. The bottle as described in claim 13 further comprising a vent tube extending from said cavity and into said vent hole.
 15. The bottle according to claim 9, further comprising: a protective cover to receive the cap cover therein while holding the cap cover by means of upper locking means, and removably fitted over an upper part of the bottle by means of lower locking means.
 16. The bottle according to claim 15, wherein the upper locking means comprises a locking flange formed along an outer edge of a top wall of the cap cover and a locking groove formed around a comer of a depression provided at a lower surface of a top wall of the protective cover, such that the locking flange of the cap cover removably engages with the locking groove of the protective cover; and, wherein the lower locking means comprises a locking flange formed around an inner surface of a lower edge of the protective cover and a locking groove formed around the upper part of the bottle, such that the locking flange of the protective cover is removably fitted over the locking groove of the bottle.
 17. The bottle according to claim 9, wherein the bottle comprises: a first container part externally formed at a bottom of the bottle, and having an open lower end, with external threads formed at the lower end of the first container part; a first chemical contained in the first container part; a breakable sheet provided at the open lower end of the first container part to close the lower end of the container part; a second container part having an open upper end, and externally engaging with the external threads of the first container part the second container part containing therein a second chemical which produces a cooling mixture to absorb heat from surroundings to cool the surroundings when the second chemical is mixed with the first chemical; a breaking edge provided at an inner surface of the second container part so as to break the breakable sheet and to open the lower end of the first container part, when the second container part is rotated to move upward relative to the first container part; and a skirt extending downward from a sidewall of a lower portion of the bottle so as surround the first and second container parts.
 18. The cap device for bottles according to claim 9, wherein a step is formed around the inner surface of the neck of the bottle to seat the valve member in the neck of the bottle.
 19. The bottle as described in claim 18 wherein said valve member has a plurality of radial ribs extending outward from an external surface of the valve part while defining a plurality of additive discharging holes between the radial ribs; said shank extending from said valve part has a wedge-shaped tip; and said valve member also having a ring to surround outside ends of the radial ribs.
 20. The bottle as described in claim 18 further comprising a vent hole formed at a predetermined position of an upper end of the funnel part of the cap body. 